NEW YORK -- A run of ethnically insensitive and otherwise offensive remarks -- the latest involving a contestant joking about child pornography -- has continued during filming for the CBS reality TV show "Big Brother," raising questions about whether the network should be doing more to police it.

Spencer Clawson was heard in the show's live feed pretending to be a fellow contestant while saying he liked to watch child pornography, especially involving toddlers, E! online and Big Brother Spice websites reported.

CBS issued a statement saying it found "the statements made by Spencer on the live Internet feed to be offensive," adding that personal remarks by the show's houseguests "are those of the individual(s) speaking, and do not represent the views or opinions of CBS or the producers of the program."

It was the latest in a series of contestant remarks that CBS has disowned publicly during the show's season, in which the networks puts a bunch of people who don't know each other into in a house together and films them to see how they get along.

View full sizeThis photo released by CBS shows houseguest Amanda Zuckerman, left, the 28-year-old real estate agent in Boynton Beach, Fla., on "Big Brother." A run of ethnically insensitive remarks has continued on filming for "Big Brother," raising questions about whether CBS should be doing more to police its reality show. (AP Photo/CBS, Sonja Flemming)

In the past week, on the 24-hour Internet feed of the house, Amanda Zuckerman, who's white, complained about a black cast member putting a headband on her greasy, "nappy-hair head." She referred to another black housemate as "the dark knight" and "the black mamba," mocked the accent of a Korean woman and referred to "Puerto Rican showers," leading to a debate about whether she's racist.

Public relations executive Joni Hudson-Reynolds, who writes a blog called ebonymompolitics, said young people watch the show and she believes CBS should be doing more to prevent the dissemination of offensive language.

"To just say 'This is reality television, and these are the kinds of things that are said in regular conversations' is not enough," Hudson-Reynolds said. "This is a controlled environment."

Hudson-Reynolds said she watches "Big Brother" with her teenage daughter, considering it a guilty pleasure. She doesn't go online to watch the day-to-day interactions. For people who don't follow it that closely, controversial comments are given greater circulation through compilations that are posted online.

CBS declined to comment further on the insensitive language. It's unclear whether there's a built-in delay on the Internet feed of what is going on in the household that would enable producers to cut off offensive talk.

Moonves, speaking to reporters last week, said he believed CBS was handling the situation appropriately.

"We did not comment on some of the racial things being said until it really affected what was going on in the household," he said.

Author Jennifer Pozner, who wrote "Reality Bites Back: The Troubling Truth About Guilty Pleasure TV," said she has a hard time believing show producers didn't get exactly what they wanted. A show like "Big Brother" is cast with people to increase the likelihood of table-flipping fights, drunken hook-ups and offensive language, she said.

"You know what -- it's appalling, and you created it for that exact reason," Pozner said. "Why should we believe that you as a network did not get exactly what you wanted?"

"Big Brother," now in its 15th season, is averaging 7.1 million viewers per episode this season, up 9 percent over last year, the Nielsen ratings company said.